mono bug

gistfile1.txt

-- Mono JIT compiler version 4.2.1 (Stable 4.2.1.102/6dd2d0d Thu Nov 12 09:52:44 UTC 2015)

This code worked in 4.0.4 and .NET as i don't get exception but yet.
btw my "OutputSettings.Encoding" is "System.Text.Latin1Encoding" as in xslt

```F#
open System.Xml
open System.Text

let xslt = new Xsl.XslCompiledTransform()
xslt.Load( "/export.xslt")

let ws = XmlWriter.Create("/output.xml", xslt.OutputSettings)
xslt.Transform("/input.xml", null, ws)
```

it run in an exception
```
System.ArgumentException: Conversion buffer overflow.
  at System.Text.Encoder.Convert (System.Char[] chars, Int32 charIndex, Int32 charCount, System.Byte[] bytes, Int32 byteIndex, Int32 byteCount, Boolean flush, System.Int32& charsUsed, System.Int32& bytesUsed, System.Boolean& completed) <0x7f01564689c0 + 0x002ae> in <filename unknown>:0
  at System.Xml.XmlEncodedRawTextWriter.FlushEncoder () <0x41b9af20 + 0x00084> in <filename unknown>:0
  at System.Xml.XmlEncodedRawTextWriter.Flush () <0x41b9aa30 + 0x0001b> in <filename unknown>:0
  at System.Xml.XmlWellFormedWriter.Flush () <0x41b9a9e0 + 0x0001f> in <filename unknown>:0
Stopped due to error
```

EDIT: the workaround is to set encoding to UTF8, seems mono xstl dont support Latin1? That work on all plaftorms and versions YET.
```
open System.Xml
open System.Text

let xslt = new Xsl.XslCompiledTransform()
xslt.Load( "/export.xslt")

let xws = xslt.OutputSettings.Clone()
xws.Encoding <- Encoding.UTF8

let ws = XmlWriter.Create("/output.xml", xws)
xslt.Transform("/input.xml", null, ws)
```